Schleswig plebiscite

The Schleswig plebiscite occurred from 10 February to 14 March 1920 when the people of the Schleswig region of the Weimar Republic voted on determining the Germany-Denmark border. Schleswig and Holstein had been annexed by Prussia following the 1864 Second Schleswig War, but the Danish-speaking majority in the north and the German-speaking minority in the south culturally clashed with one another. In 1920, the Triple Entente presided over a plebiscite in the region, and voters in the northern two-thirds of Schleswig voted to rejoin Denmark, while voters in the southern third of Schleswig voted to remain in Germany. The plebiscite determined Germany and Denmark's present-day border, ending the culture clashes.